EmaMobile.stores.cle = Ext.regModel('Cle', {
    fields: [
             { name: 'cle', type: 'string'},
             { name: 'uid', type: 'string'},
             { name: 'url', type: 'string'}
            ],
    proxy: {
        type: 'localstorage',
        id: 'EMaMobile-key'
    }
});